The cat who blew the whistle by Lilian Jackson Brown

Another story with Jim Qwilleran and his beloved siamese cats Koko and YumYum. There's a lot of talking about old trains, but it's not too boring. Qwill still lives in the house that he inherited from the rich Klingenshoen, but he lives alone without the woman that cooked for him in 'the cat who played post office', and he has a new love-interest, a serious one this time: Polly Duncan, the widow working at the local library. A woman that he knows only by phone, since the time apparently she helped him solve a case and has never met comes to town and he 'uses' her to gain information.
Floyd Trevelian, head of an important bank, has disappeared right when the bank went bankrupt. He's searched for relentlessly but he's nowhere to be found, so Celia Robinson visits his sick wife and his melancholy daughter and repeats everything she hears to Qwill.
Polly is very stressed because she's having her own house built and she won't accept help in any decisions, until she has a heart attack. Fortunately it all goes well, and she decides to go living in the big house of her sister-in-law with her cat. The townfolks are planning a play, Shakespeare's Midsummer night's dream, and Koko makes a sound every time he hears "Ermia". Koko does a lot of strange things lately that Qwill can't understand, like stealing red pens, looking out of the windows towards the construction site, and other things.
Floyd's son Eddie is working at Polly's house with his old friend Benno. When Eddie will die for a bad accident, his last words in the hospital will be to her sister, the truth about the whole thing. Floyd's secretary Nella had used the two men to kill Floyd, then had run away with the money without paying them. Benno wanted Eddie to pay him instead, and after a fight he had been so angry he had killed Eddie's dog, a nice Chowchow, poor thing, then during another fight Eddie had killed him, probably in self-defence. Floyd's body had been hidden under Polly's new house. All this explained why: Koko kept stealing black pens: Eddie had a black beard and his mother's name was Florence Penn. Also why he kept choosing stories with lions in the title for him to read: Nella's full name was Lionella, similar to lion, indeed. As for the reason why Koko keeps making a sound every time he hears the name Hermia, Qwill finds it consulting the dictionary: Hermia as Hermaphrodite, and it makes him think that the reason why now nobody can find Nella is because now she's probably Lionel. He thinks Lionel is the real identity, and to pass off as a woman was part of the fraud, so the police can't find her/him because they're looking for a woman while they should be looking for a man. Now, this was a bit too much. It's already absurd that a cat could help him solve  a murder case, but that could be ok because the book is nice and the cats are adorable, but Nella was said to be stunning, a very beautiful girl. How could a man pass for a beautiful woman for I don't know how long, and then all of a sudden grow a beard and be seen only as a man? This is not a drag-queen thing, what it's being said is that this man passed for a stunning girl without anybody ever suspecting he could be a man, but at the same time after a few weeks, maybe less, he is back a man without anybody ever suspecting he was the 'wanted' woman?.. come on, men have beards, even when shaved the skin is not the skin of a girl, although of course that could be corrected with the right make-up, and the breast was real (in which case how could he later go around as a man) or fake (in which case it means that all the people looking at her in admiration of her beauty never suspected it, no one, not the men and not the women)? Okay, I know I know, maybe it could be possible with good make-up.. still...it's a bit farfetched.
Anyway, aside from this last line, the book was easy to read and nice. Koko's detective powers are absurd, as all of Qwill's friends believe (the few ones he talked about it  to, although not in this book) but Qwill loves his cats so much he thinks they're special. This time it was just going too far because Koko did so many strange things that turned out to be important and related to the solution of the case that it's impossible to think of a coincidence. Should I really believe in Koko's powers? Come on, this is not supposed to be a fantasy book! Anyway, it's not really important, otherwise after the first book nobody should read any more.
I love cats and Koko and YumYum are adorable, and all in all I liked this book enough.